But will he actually survive if I do leave (esp. if he's a #2 type)?
The great likelihood is yes, he will survive and often its best for him in the long-run.
Note: "#2 type" refers to previous page
No matter what he says you did, he has no right to hurt you
2018 Mindful Pause / Proactive Mindfulness
See: Demystifying mindfulness - Mindfulness & spirituality - From mindless to mindful - One-minute mindfulness exercise - Mindful listening - Embodied relational mindfulness - Relational mindfulness - Bodyfulness - Existential mindfulness - Reactive vs Proactive quotes & thoughts - Mindfulness exercises - Secular alternative 12 steps